Intercom products by Channel Vision allow you to use your existing telephones to speak to the front door and using your wireless phone anywhere in the house you can speak to the person and press the #9 key to activate a door or gate strike to let them enter.

Channel Vision intercoms are also a security product; never answer the door and let yourself or family be vulnerable to a potential assailant.  Home invasion robberies occur when an unsuspecting victim answers the door to a stranger or pulls in the garage while a person is walking down the street, allowing them to run into the open garage.